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What's quicker and better to determine if an array key exists in PHP?
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there is a difference from php.net you'll read:
isset() does not return TRUE for array
keys that correspond to a NULL value,
while array_key_exists() does.
A very informal test shows array_key_exists() to be about 2.5 times slower than isset()
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Replace multiple characters in a C# string
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Remember that Strings are wchar_t in .net, you are replacing only a subset of all the possible characters (and you'll need 65536 bools to optimize that...)
– gog
Jul 4 '19 at 12:57
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Is there a date format to display the day of the week in java?
...you may be interested in the standard ISO 8601 week numbering scheme: yyyy-Www-d.
2018-W01-2
Week # 1 has the first Thursday of the calendar-year. Week starts on a Monday. A year has either 52 or 53 weeks. The last/first few days of a calendar-year may land in the next/previous week-based-yea...
Java heap terminology: young, old and permanent generations?
... other?
Image source & oracle technetwork tutorial article: http://www.oracle.com/webfolder/technetwork/tutorials/obe/java/gc01/index.html
"The General Garbage Collection Process" in above article explains the interactions between them with many diagrams.
Have a look at summary diagram:
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What is included in JCenter repository in Gradle?
...ackages directly to Maven Central.
Also I find a good compare at https://www.jfrog.com/knowledge-base/why-should-i-use-jcenter-over-maven-central/ ( unfortunately the link seems dead but some useful hints are here)
jcenter is the public repository hosted at bintray that is free to use
for op...
Decompile .smali files on an APK [duplicate]
... apk source files and no problems with .smali files. Here is a link http://www.hensence.com/en/smali2java/
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How can I check whether a numpy array is empty or not?
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http://www.scipy.org/Tentative_NumPy_Tutorial#head-6a1bc005bd80e1b19f812e1e64e0d25d50f99fe2
NumPy's main object is the homogeneous multidimensional array. In Numpy dimensions are called axes. The number of axes is rank. Numpy's ...
Testing web application on Mac/Safari when I don't own a Mac
... but it works for general browser testing.
How to setup see here: https://www.howtogeek.com/289594/how-to-install-macos-sierra-in-virtualbox-on-windows-10/
I'm using this for a while now and it works quite well
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What is the equivalent of Java's final in C#?
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http://en.csharp-online.net/CSharp_FAQ:_What_are_the_differences_between_CSharp_and_Java_constant_declarations
C# constants are declared using the const keyword for compile time constants or the readonly keyword for runtime constants. The semantics...
Binding to static property
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In .NET 4.5 it's possible to bind to static properties, read more
You can use static properties as the source of a data binding. The
data binding engine recognizes when the property's value changes if a
static event is ra...